WO2013004143A1 - Method and apparatus for processing acidic sea water - Google Patents

Method and apparatus for processing acidic sea water Download PDF

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Publication number
WO2013004143A1
WO2013004143A1 PCT/CN2012/077718 CN2012077718W WO2013004143A1 WO 2013004143 A1 WO2013004143 A1 WO 2013004143A1 CN 2012077718 W CN2012077718 W CN 2012077718W WO 2013004143 A1 WO2013004143 A1 WO 2013004143A1
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Prior art keywords
seawater
acidic
aeration
treatment method
conduit
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PCT/CN2012/077718
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French (fr)
Chinese (zh)
Inventor
彭斯干
Original Assignee
Peng Sigan
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Publication date
Application filed by Peng Sigan filed Critical Peng Sigan
Priority to CN201280032868.9A priority Critical patent/CN103702946B/en
Priority to JP2014517426A priority patent/JP6007245B2/en
Publication of WO2013004143A1 publication Critical patent/WO2013004143A1/en
Priority to US14/146,346 priority patent/US20140231361A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/507—Sulfur oxides by treating the gases with other liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/006—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/06—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10—Inorganic absorbents
    • B01D2252/103—Water
    • B01D2252/1035—Sea water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1481—Removing sulfur dioxide or sulfur trioxide
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/024—Exhaust treating devices having provisions not otherwise provided for for cooling the device using a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/16—Exhaust treating devices having provisions not otherwise provided for for reducing exhaust flow pulsations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/04—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an acidic seawater treatment method, and more particularly to a method for treating acidic seawater washed over the exhaust gas of an internal combustion engine.
  • the invention also relates to an acidic seawater treatment device.
  • the method and apparatus of the present invention are particularly suitable for use in, but not limited to, offshore platforms such as ships, drilling, floating plants, and the like.
  • the seawater used for washing absorbs a large amount of SO 2 to form acidic seawater, and its pH can reach about 3.
  • acidic seawater is not allowed to be discharged directly into the ocean.
  • it is necessary to at least raise the pH of the discharged seawater to near seawater (generally required to be above pH 6.5).
  • the present invention has been made in an effort to provide an acidic seawater treatment scheme suitable for use on offshore platforms such as ships.
  • a first object of the present invention is to provide a method of processing acidic water, for absorption of SO 2 over the internal combustion engine exhaust gas or water washed to remove the acid treated, in an environmentally friendly manner and then discharged to the sea.
  • the acidic seawater treatment method provided by the present invention is based on the following principles:
  • Seawater has good absorption of sulfur dioxide.
  • the seawater washed and dissolved in sulfur dioxide is acidic and needs to be treated to raise its pH before it can be discharged into natural waters.
  • alkaline seawater is first added to the acidic seawater having a low pH value discharged from the washing process, and the pH is preliminarily raised to ⁇ 5.5, and then air is blown in.
  • the process of adding alkaline seawater to raise the pH value is to neutralize the acidic seawater by the alkalinity of the alkaline seawater, so that the dissolved sulfur dioxide, ie, the free sulfurous acid, is neutralized to a sulfite, and the pH of the treated seawater at this time is Raise to ⁇ 5.5; after that, to increase the pH of the seawater to the allowable discharge value (generally ⁇ 6.5), it is necessary to continue to add a large amount of alkaline seawater, thereby increasing the energy consumption for lifting and transporting seawater;
  • the method of blasting air into the seawater can also raise the pH of the seawater to a value that allows for discharge.
  • the blasting air that is, the aeration process, is a process of continuously blasting air into the flowing seawater to be treated, and the effect depends on the flow rate of the blasted air, the flow rate of the seawater to be treated, and the volume of the aeration container.
  • the flow rate of the treated seawater is related to the displacement of the engine and the sulfur content of the fuel.
  • the flow rate of the blown air is related to the flow rate of the treated seawater and the volume of the aeration vessel, and the volume of the aeration vessel is On the one hand, it is related to the flow rate of the air that is blown in and the flow rate of the seawater to be treated, and is also subject to the space of the application place.
  • the space of the application site does not constitute a constraint; the process space required by the prior art is often large and cannot be directly applied to dense spaces such as offshore platforms.
  • the present invention proposes a method for reducing the space occupied by the seawater washing process device: continuously blasting air into the flowing seawater to be treated, the volume of the aeration container, the amount of seawater to be treated, and the amount of air to be blown satisfy the following formula ( Conditions of I) and (II):
  • R is the volume of the aeration vessel (m 3 )
  • L is the amount of seawater to be treated per hour (m 3 )
  • Q is the amount of air that is bubbled per hour in a standard state (0 ° C, 1 atmosphere) (Nm 3 ), so that the acidic wash water can be treated to be near neutral and then discharged into the ocean.
  • the acidic seawater treatment method provided by the present invention comprises:
  • R is the volume of the aeration vessel, the unit is m 3 ;
  • L is the amount of the neutralized seawater treated per hour, in units of m 3 ;
  • Q is the amount of air per hour, in units of Nm 3 , calculated in the standard state, that is, 0 ° C, 1 atmosphere.
  • the acidic seawater referred to herein may be seawater that absorbs SO 2 , such as seawater that washes exhaust gas of an internal combustion engine, such as a marine internal combustion engine.
  • alkaline seawater refers to seawater having a pH greater than 7. Since natural seawater is generally alkaline, in a preferred embodiment, the alkaline seawater is natural seawater taken from the ocean, that is, fresh. seawater.
  • the aeration container referred to herein is a container for accommodating seawater and aeration.
  • the container can be any shape suitable for the reaction of seawater with air.
  • the acidic seawater is mixed with alkaline seawater to adjust the pH of the neutralized seawater to 5.5 to 6.4. .
  • the pH of the acidic seawater is increased to 6.5 to 7 after being treated, that is, the pH of the neutralized seawater discharged from the aeration vessel is 6.5 to 7, so that the discharge to the sea can be achieved.
  • Another object of the present invention is to provide an acidic seawater processing apparatus, for an internal combustion engine or the SO 2 through absorption tail gas treated water washed to remove the acid, and in an environmentally friendly manner into the sea.
  • the acidic seawater treatment device provided by the invention comprises:
  • An aeration vessel for reacting the acidic seawater with air and an aeration device for aerating the aeration vessel;
  • the volume of the aeration container is configured as shown in the following formula (I):
  • R is the volume of the aeration vessel, the unit is m 3 ;
  • L is the amount of seawater to be treated per hour, in units of m 3 .
  • the aeration device can be configured to have a desired amount of aeration. Therefore, in a preferred embodiment, as a preferred solution, the aeration device is configured to have an aeration amount Q, which is calculated by the following formula (II):
  • Q is the amount of air that needs to be bubbled per hour, in units of Nm 3 , calculated in the standard state, ie 0 ° C, 1 atmosphere.
  • the acidic seawater treatment method and equipment provided by the invention can greatly reduce the space occupied by the washing and desulfurization seawater and save water, and can meet the environmental requirements of the final discharge of the desulfurized seawater pH value ⁇ 6.5 in marine platforms such as ships.
  • the recognized green emission reduction process for seawater washing and desulfurization has become a reality in the application of dense spaces in offshore platforms such as ships, following the successful application of land-based coal-fired power plants.
  • FIG. 1 is a schematic view of an acidic seawater treatment apparatus according to a first embodiment of the present invention.
  • FIG. 2 is a schematic view of an acidic seawater treatment apparatus according to a second embodiment of the present invention.
  • Fig. 1 shows an acidic seawater treatment apparatus according to a first embodiment of the present invention.
  • the acidic seawater treatment in this embodiment The apparatus includes an aeration vessel 1, an aeration device, a first conduit 31, a second conduit 32, and a third conduit 33.
  • the aeration container 1 is used for reacting seawater with air.
  • Aeration container 1 with exhaust pipe 11 For discharging the gas generated after the reaction.
  • the first conduit 31 is used to transport the acidic seawater to the aeration vessel 1; the second conduit 32 is used to transport the alkaline seawater to the first conduit 31 In the first pipe 31, the acidic seawater is mixed with the alkaline seawater; the third pipe 33 is used to discharge the seawater after the reaction.
  • the aeration device is for aerating the aeration container, and includes an aeration head 21, a blower 22, and an aeration tube 23.
  • Aeration head 21 It is a plurality of evenly distributed at the bottom of the aeration container 1.
  • the acidic seawater treatment equipment of this embodiment was tested for relevant parameters.
  • the seawater to be treated is treated with acidic washing water that has been washed by the exhaust gas of the internal combustion engine of the ship.
  • the pH is about 3, and the mixed seawater is used to form neutralized seawater.
  • the alkaline seawater is made of natural seawater; the supply of alkaline seawater is based on the pH value of the neutralized seawater. Whether it is 5.5 to 6.0 to adjust, the supply is lower than 5.5, the supply is higher than 6.0, and the amount of neutralized seawater entering the aeration container is controlled to be about 760 m 3 /h; the aeration container is per neutral seawater.
  • the amount of time required to be processed is 0.008 times, about 6 m 3 ; After testing, the aeration of the aerator is controlled to [(25 ⁇ 85) / 0.0088 m 3 / hour, which can achieve neutralization of seawater discharge After the pH value is 6.5 to 7; if the aeration container is configured to 0.3 times the amount of neutralized seawater to be treated per hour, that is, about 230 m 3 , after testing, the aeration amount of the aeration device is controlled to [25 ⁇ 85)/0.3]m 3 /hour, the pH of the neutralized seawater can be 6.5 to 7.
  • R (0.05 - 0.2) L can be preferably set.
  • Fig. 2 shows an acidic seawater treatment apparatus according to a second embodiment of the present invention.
  • the second pipe 32 directly transports the alkaline seawater to the aeration vessel 1, and the acidic seawater and the alkaline seawater are neutralized in the aeration vessel 1 and then exposed. gas.

Abstract

A method and apparatus for processing acidic seawater. Acidic seawater is first mixed with alkaline seawater, then the seawater neutralized after mixing is sent into an aeration container for aeration processing. R, the volume of the aeration container used, and L, the volume of the seawater neutralized, satisfy the econometric relationship of: R = (0.008-0.3)L; while Q, the volume of air bubbled into the aeration container, R, and L satisfy the econometric relationship of: Q = (25-85)L/R. The method and apparatus are applicable in processing acidic seawater having washed an exhaust of an internal combustion engine, and are specifically applicable in, but not limited to, seagoing vessels, well drilling, floating factories and other offshore platforms.

Description

酸性海水处理方法及设备  Acidic seawater treatment method and equipment
技术领域 Technical field
本发明涉及一种酸性海水处理方法，特别涉及对于洗涤过内燃机尾气的酸性海水进行处理的方法。本发明还涉及一种酸性海水处理设备。本发明的方法和设备特别适用于但不限于船舶、钻井、浮动工厂等海上平台。 The present invention relates to an acidic seawater treatment method, and more particularly to a method for treating acidic seawater washed over the exhaust gas of an internal combustion engine. The invention also relates to an acidic seawater treatment device. The method and apparatus of the present invention are particularly suitable for use in, but not limited to, offshore platforms such as ships, drilling, floating plants, and the like.
背景技术 Background technique
近 20 年来，净化工业设施排放的以 SO2 为主的气态污染物的国际立法逐步严格和完善，近几年的限制对象已从陆基工业设施发展到海基船舶。限制船舶等内燃机硫氧化物排放的国际立法从 2005 年开始实施。In the past 20 years, the international legislation for the emission of SO 2 -based gaseous pollutants from industrial facilities has been gradually tightened and improved. In recent years, the restrictions have been developed from land-based industrial facilities to sea-based ships. International legislation restricting the emission of sulfur oxides from internal combustion engines such as ships has been implemented since 2005.
以天然海水洗涤实现矿物燃料硫氧化物净化的工艺技术，在陆基燃煤电厂的应用已很成熟。 对于海水法烟气脱硫技术在船舶上的应用，其中一个有代表性的解决方案是申请号为 PCT/CN2008/071304 的国际申请（该文献在此并入全文）。该发明所采用的技术方案是：使内燃机尾气与从上往下流动的海水在填料洗涤层实现逆流洗涤，从而实现吸收 SO2 的目的，这有效解决了以上问题。The application of natural seawater washing to achieve fossil fuel sulfur oxide purification technology has been mature in land-based coal-fired power plants. One representative solution for the application of seawater flue gas desulfurization technology to ships is the international application of PCT/CN2008/071304, which is incorporated herein in its entirety. The technical solution adopted by the invention is that the exhaust gas of the internal combustion engine and the seawater flowing from the top to the bottom are subjected to countercurrent washing in the filler washing layer, thereby achieving the purpose of absorbing SO 2 , which effectively solves the above problems.
利用申请号为 PCT/CN2008/071304 的国际申请所提供的方案对内燃机尾气进行处理后，用于洗涤的海水会吸收大量的 SO2 而形成酸性海水，其 pH 值可达到 3 左右。如此酸性的海水是不允许直接排放到海洋中的。为了降低对环境的影响，至少必需使排放海水的 pH 值上升至接近海水（一般要求是在 pH6.5 之上）。After treating the exhaust gas of the internal combustion engine with the solution provided in the international application No. PCT/CN2008/071304, the seawater used for washing absorbs a large amount of SO 2 to form acidic seawater, and its pH can reach about 3. Such acidic seawater is not allowed to be discharged directly into the ocean. In order to reduce the impact on the environment, it is necessary to at least raise the pH of the discharged seawater to near seawater (generally required to be above pH 6.5).
对于 陆基燃煤电厂，吸收了 SO2 的酸性海水的处理已经有了相关的方案。 然而， 该类方案不能直接用于船舶等海上平台，其主要原因是船舶等海上平台的有限的空间不允许设置大尺寸的曝气池。For land-based coal-fired power plants, there has been a related solution for the treatment of acidic seawater that has absorbed SO 2 . However, such a scheme cannot be directly applied to offshore platforms such as ships, and the main reason is that a limited space of an offshore platform such as a ship does not allow a large-sized aeration tank to be installed.
针对以上所述的现有技术中的有关问题，本发明致力于提供一种适用于船舶等海上平台的酸性海水处理方案。 In view of the related problems in the prior art described above, the present invention has been made in an effort to provide an acidic seawater treatment scheme suitable for use on offshore platforms such as ships.
发明内容 Summary of the invention
本发明的第一个目的是提供一种酸性海水处理方法，用于对吸收过SO2或是洗涤过内燃机尾气的海水进行处理以消除酸性，再以环境友好的方式排入海洋中。A first object of the present invention is to provide a method of processing acidic water, for absorption of SO 2 over the internal combustion engine exhaust gas or water washed to remove the acid treated, in an environmentally friendly manner and then discharged to the sea.
本发明所提供的酸性海水处理方法基于如下原理： The acidic seawater treatment method provided by the present invention is based on the following principles:
海水对二氧化硫有良好的吸收性，洗涤并溶入了二氧化硫的海水呈酸性，需要进行处理以提升其pH后才能排放到自然海域。为此，先向洗涤工序排出的pH值很低的酸性海水中加入碱性海水，使其pH值预提升至≥5.5，然后鼓入空气。加入碱性海水提升pH值的过程，是利用碱性海水的碱度来中和酸性海水，使溶入的二氧化硫即游离态的亚硫酸被中和成亚硫酸盐，这时被处理海水的pH值升至≥5.5；此后，要使海水的pH值继续上升到允许排放的数值（一般为≥6.5），还需要继续加入大量碱性海水，从而增加提升和输送海水的能耗；这里，采取向海水中鼓入空气的方法，也可以使海水的pH值继续上升到允许排放的数值。被处理海水的pH值低于5.5时鼓入空气会导致SO2逸出，pH值过高时鼓入空气会降低处理效率，因此，在被处理海水的pH值被调整为≥5.5后鼓入空气。鼓入空气即曝气工序，是向流动的被处理海水连续鼓入空气的过程，其效果取决于鼓入空气的流量、被处理海水的流量及曝气容器的容积。在上述三项因素中，被处理海水的流量与发动机的排量和燃油的硫含量有关，鼓入空气的流量与被处理海水的流量及曝气容器的容积有关，而曝气容器的容积则一方面与鼓入空气的流量及被处理海水的流量有关，同时也受制于应用场所的空间。在陆基燃煤电厂应用的条件下，应用场所的空间不构成制约因素；现有技术需要的工艺空间往往很大，不能直接应用于海上平台等致密空间。为克服现有技术不足，本发明提出减少海水洗涤工艺装置占用空间的方法：对流动的被处理海水连续鼓入空气，曝气容器的容积、被处理海水量及鼓入空气量满足下式( I ) 和(Ⅱ)的条件：Seawater has good absorption of sulfur dioxide. The seawater washed and dissolved in sulfur dioxide is acidic and needs to be treated to raise its pH before it can be discharged into natural waters. For this purpose, alkaline seawater is first added to the acidic seawater having a low pH value discharged from the washing process, and the pH is preliminarily raised to ≥5.5, and then air is blown in. The process of adding alkaline seawater to raise the pH value is to neutralize the acidic seawater by the alkalinity of the alkaline seawater, so that the dissolved sulfur dioxide, ie, the free sulfurous acid, is neutralized to a sulfite, and the pH of the treated seawater at this time is Raise to ≥ 5.5; after that, to increase the pH of the seawater to the allowable discharge value (generally ≥ 6.5), it is necessary to continue to add a large amount of alkaline seawater, thereby increasing the energy consumption for lifting and transporting seawater; The method of blasting air into the seawater can also raise the pH of the seawater to a value that allows for discharge. When the pH of the seawater to be treated is lower than 5.5, the air is blown to cause SO 2 to escape. When the pH is too high, the air is blown to reduce the treatment efficiency. Therefore, the pH of the seawater to be treated is adjusted to ≥ 5.5 and then swelled. air. The blasting air, that is, the aeration process, is a process of continuously blasting air into the flowing seawater to be treated, and the effect depends on the flow rate of the blasted air, the flow rate of the seawater to be treated, and the volume of the aeration container. Among the above three factors, the flow rate of the treated seawater is related to the displacement of the engine and the sulfur content of the fuel. The flow rate of the blown air is related to the flow rate of the treated seawater and the volume of the aeration vessel, and the volume of the aeration vessel is On the one hand, it is related to the flow rate of the air that is blown in and the flow rate of the seawater to be treated, and is also subject to the space of the application place. Under the conditions of land-based coal-fired power plants, the space of the application site does not constitute a constraint; the process space required by the prior art is often large and cannot be directly applied to dense spaces such as offshore platforms. In order to overcome the deficiencies of the prior art, the present invention proposes a method for reducing the space occupied by the seawater washing process device: continuously blasting air into the flowing seawater to be treated, the volume of the aeration container, the amount of seawater to be treated, and the amount of air to be blown satisfy the following formula ( Conditions of I) and (II):
R = （0.008～0.3）L …（I） R = (0.008 ~ 0.3) L ... (I)
Q = （25～85）L / R …（Ⅱ） Q = (25 ~ 85) L / R ... (II)
式中R为曝气容器容积（m3），L为每小时需要处理海水的量（m3），Q 为每小时鼓入空气以标准状态（0℃，1个大气压）计算的量（Nm3），这样便可将酸性洗涤水处理成接近中性后排入海洋。Where R is the volume of the aeration vessel (m 3 ), L is the amount of seawater to be treated per hour (m 3 ), and Q is the amount of air that is bubbled per hour in a standard state (0 ° C, 1 atmosphere) (Nm 3 ), so that the acidic wash water can be treated to be near neutral and then discharged into the ocean.
因此，本发明所提供的酸性海水处理方法包括： Therefore, the acidic seawater treatment method provided by the present invention comprises:
1) 将所述酸性海水与碱性海水混合得到中和海水； 1) mixing the acidic seawater with alkaline seawater to obtain neutralized seawater;
2 ）使所述中和海水 在曝气容器中连续流动，并连续鼓入空气，其中，所述曝气容器的容积R、需要处理的所述中和海水的量L及鼓入空气量Q满足下式( I ) 和(Ⅱ)的条件： 2) making the neutralized seawater Continuously flowing in the aeration vessel and continuously bubbling air, wherein the volume R of the aeration vessel, the amount L of the neutralized seawater to be treated, and the amount of the inflated air Q satisfy the following formula (I) and II) conditions:
R = （0.008～0.3）L …（I） R = (0.008 ~ 0.3) L ... (I)
Q = （25～85）L / R …（Ⅱ） Q = (25 ~ 85) L / R ... (II)
式中R为所述曝气容器的容积，单位为m3；L为每小时处理的所述中和海水的量，单位为m3；Q 为每小时鼓入空气的量，单位为Nm3，以标准状态，即0℃、1个大气压计算。Where R is the volume of the aeration vessel, the unit is m 3 ; L is the amount of the neutralized seawater treated per hour, in units of m 3 ; Q is the amount of air per hour, in units of Nm 3 , calculated in the standard state, that is, 0 ° C, 1 atmosphere.
此处所说的酸性海水可以是吸收了 SO2 的海水，例如洗涤了内燃机尾气的海水，如船舶内燃机。 此处所说的碱性海水指的是pH值大于7的海水，由于天然海水 通常呈碱性，所以，在一个优选的具体实施方式中， 碱性海水是 取自海洋的天然海水，也就是新鲜海水。The acidic seawater referred to herein may be seawater that absorbs SO 2 , such as seawater that washes exhaust gas of an internal combustion engine, such as a marine internal combustion engine. As used herein, alkaline seawater refers to seawater having a pH greater than 7. Since natural seawater is generally alkaline, in a preferred embodiment, the alkaline seawater is natural seawater taken from the ocean, that is, fresh. seawater.
此处所说的曝气容器即用于容纳海水和进行曝气的容器。该容器可以为适合海水与空气反应的任何形状。 The aeration container referred to herein is a container for accommodating seawater and aeration. The container can be any shape suitable for the reaction of seawater with air.
在一个优选的具体实施方式中， 将所述酸性海水与碱性海水混合使其中和后海水的 pH 值为 5.5 ～ 6.4 。 In a preferred embodiment, the acidic seawater is mixed with alkaline seawater to adjust the pH of the neutralized seawater to 5.5 to 6.4. .
作为一个优选的方案，酸性海水被处理后pH值上升到6.5～7，即中和海水从曝气容器排出时的pH值为6.5～7，这样可以达到排放到海洋中的要求。 As a preferred solution, the pH of the acidic seawater is increased to 6.5 to 7 after being treated, that is, the pH of the neutralized seawater discharged from the aeration vessel is 6.5 to 7, so that the discharge to the sea can be achieved.
本发明的另一个目的是提供一种酸性海水处理设备，用于对吸收过SO2或是洗涤过内燃机尾气的海水进行处理以消除酸性，再以环境友好的方式排入海洋中。Another object of the present invention is to provide an acidic seawater processing apparatus, for an internal combustion engine or the SO 2 through absorption tail gas treated water washed to remove the acid, and in an environmentally friendly manner into the sea.
本发明所提供的酸性海水处理设备包括： The acidic seawater treatment device provided by the invention comprises:
用于所述酸性海水与空气进行反应的曝气容器以及用于向所述曝气容器内曝气的曝气装置； An aeration vessel for reacting the acidic seawater with air and an aeration device for aerating the aeration vessel;
所述曝气容器的容积按下式（I）配置： The volume of the aeration container is configured as shown in the following formula (I):
R = （0.008～0.3）L …（I）； R = (0.008 ~ 0.3) L ... (I);
式中R为所述曝气容器的容积，单位为m3；L为每小时需要处理的海水的量，单位为m3。Where R is the volume of the aeration vessel, the unit is m 3 ; L is the amount of seawater to be treated per hour, in units of m 3 .
另外，还可以对曝气装置进行配置，使之具有一个所期望的曝气量。因此，在一个优选的具体实施方式种，作为一个优选的方案， 所述 曝气装置被配置成具有曝气量Q，Q按下式（Ⅱ）计算： In addition, the aeration device can be configured to have a desired amount of aeration. Therefore, in a preferred embodiment, as a preferred solution, The aeration device is configured to have an aeration amount Q, which is calculated by the following formula (II):
Q = （25～85）L / R …（Ⅱ） Q = (25 ~ 85) L / R ... (II)
式中Q 为每小时需要鼓入空气的量，单位为Nm3，以标准状态，即0℃、1个大气压计算。Where Q is the amount of air that needs to be bubbled per hour, in units of Nm 3 , calculated in the standard state, ie 0 ° C, 1 atmosphere.
利用本发明所提供的酸性海水处理方法及设备，可大幅缩小处理洗涤脱硫海水占用的空间并节省用水，在船舶等海上平台应用，可以满足最终排放的洗涤脱硫海水pH值≥6.5的环保要求，使海水洗涤脱硫这一公认的绿色减排工艺，继陆基燃煤电厂成功应用之后，在船舶等海上平台致密空间的应用成为现实。 The acidic seawater treatment method and equipment provided by the invention can greatly reduce the space occupied by the washing and desulfurization seawater and save water, and can meet the environmental requirements of the final discharge of the desulfurized seawater pH value ≥ 6.5 in marine platforms such as ships. The recognized green emission reduction process for seawater washing and desulfurization has become a reality in the application of dense spaces in offshore platforms such as ships, following the successful application of land-based coal-fired power plants.
附图说明 DRAWINGS
图 1 是本发明第一种具体实施方式的酸性海水处理设备的示意图。 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of an acidic seawater treatment apparatus according to a first embodiment of the present invention.
图 2 是本发明第二种具体实施方式的酸性海水处理设备的示意图。 2 is a schematic view of an acidic seawater treatment apparatus according to a second embodiment of the present invention.
具体实施方式 detailed description
图 1 示出了本发明 第一种具体实施方式的酸性海水处理设备。如图 1 所示，该具体实施方式中的酸性海水处理 设备包括曝气容器 1 、曝气装置、第一管道 31 、第二管道 32 、第三管道 33 。 Fig. 1 shows an acidic seawater treatment apparatus according to a first embodiment of the present invention. As shown in Figure 1, the acidic seawater treatment in this embodiment The apparatus includes an aeration vessel 1, an aeration device, a first conduit 31, a second conduit 32, and a third conduit 33.
其中，曝气容器 1 用于海水与空气进行反应。曝气容器 1 设置有排气管 11 ，用于排出反应后生成的气体。 Among them, the aeration container 1 is used for reacting seawater with air. Aeration container 1 with exhaust pipe 11 For discharging the gas generated after the reaction.
第一管道 31 用于将酸性海水输送至曝气容器 1 ；第二管道 32 用于将碱性海水输送至第一管道 31 ，在第一管道 31 中酸性海水与碱性海水进行混合；第三管道 33 用于排出反应后的海水。 The first conduit 31 is used to transport the acidic seawater to the aeration vessel 1; the second conduit 32 is used to transport the alkaline seawater to the first conduit 31 In the first pipe 31, the acidic seawater is mixed with the alkaline seawater; the third pipe 33 is used to discharge the seawater after the reaction.
曝气装置用于向所述曝气容器内曝气，包括曝气头 21 、鼓风机 22 、曝气管 23 。曝气头 21 为多个，均匀分布于曝气容器 1 的底部。 The aeration device is for aerating the aeration container, and includes an aeration head 21, a blower 22, and an aeration tube 23. Aeration head 21 It is a plurality of evenly distributed at the bottom of the aeration container 1.
对该具体实施方式的 酸性海水处理设备进行相关参数的测试。需要处理的海水由洗涤过船舶内燃机尾气的酸性洗涤水，pH为3左右，混合碱性海水后组成中和海水，碱性海水采用天然海水；碱性海水的供应量根据中和海水的pH值是否达到5.5～6.0来调节，低于5.5加大供应量，高于6.0减小供应量，最终进入曝气容器的中和海水量控制为760m3/h左右；曝气容器按中和海水每小时需要处理的量的0.008倍配置，约为6 m3；经测试，将曝气装置的曝气量控制为[（25～85）/0.008 ]m3/每小时，可实现中和海水排出后的pH值为6.5～7；如果将曝气容器按中和海水每小时需要处理的量的0.3倍配置，即230m3左右，经测试，将曝气装置的曝气量控制为[（25～85）/0.3]m3/每小时，可实现中和海水排出后的pH值为6.5～7。为了更好地协调曝气容器的容积和曝气量的设置，可以优选地设置R =（0.05～0.2）L。The acidic seawater treatment equipment of this embodiment was tested for relevant parameters. The seawater to be treated is treated with acidic washing water that has been washed by the exhaust gas of the internal combustion engine of the ship. The pH is about 3, and the mixed seawater is used to form neutralized seawater. The alkaline seawater is made of natural seawater; the supply of alkaline seawater is based on the pH value of the neutralized seawater. Whether it is 5.5 to 6.0 to adjust, the supply is lower than 5.5, the supply is higher than 6.0, and the amount of neutralized seawater entering the aeration container is controlled to be about 760 m 3 /h; the aeration container is per neutral seawater. The amount of time required to be processed is 0.008 times, about 6 m 3 ; After testing, the aeration of the aerator is controlled to [(25 ~ 85) / 0.0088 m 3 / hour, which can achieve neutralization of seawater discharge After the pH value is 6.5 to 7; if the aeration container is configured to 0.3 times the amount of neutralized seawater to be treated per hour, that is, about 230 m 3 , after testing, the aeration amount of the aeration device is controlled to [25 ～85)/0.3]m 3 /hour, the pH of the neutralized seawater can be 6.5 to 7. In order to better coordinate the volume of the aeration vessel and the setting of the aeration amount, R = (0.05 - 0.2) L can be preferably set.
图2示出了本发明第二种具体实施方式的酸性海水处理设备。与第一种具体实施方式的酸性海水处理设备所不同的是，第二管道32直接将碱性海水输送至曝气容器1，在曝气容器1中酸性海水与碱性海水进行中和然后曝气。 Fig. 2 shows an acidic seawater treatment apparatus according to a second embodiment of the present invention. Different from the acidic seawater treatment device of the first embodiment, the second pipe 32 directly transports the alkaline seawater to the aeration vessel 1, and the acidic seawater and the alkaline seawater are neutralized in the aeration vessel 1 and then exposed. gas.

Claims (17)

  1. 一种酸性海水处理方法，其特征在于，所述方法包括：  An acidic seawater treatment method, characterized in that the method comprises:
    1) 将所述酸性海水与碱性海水混合得到中和海水；1) mixing the acidic seawater with alkaline seawater to obtain neutralized seawater;
    2）使所述中和海水在曝气容器中连续流动，并连续鼓入空气，其中，所述曝气容器的容积R、需要处理的所述中和海水的量L及鼓入空气量Q满足下式( I ) 和(Ⅱ)的条件：2) continuously flowing the neutralized seawater in an aeration vessel and continuously bubbling air, wherein the volume R of the aeration vessel, the amount L of the neutralized seawater to be treated, and the amount of the inflated air Q Satisfy the following formula ( Conditions of I) and (II):
    R =（0.008～0.3）L …（I） R = (0.008 ~ 0.3) L ... (I)
    Q =（25～85）L / R …（Ⅱ） Q = (25 ~ 85) L / R ... (II)
    式中R为所述曝气容器的容积，单位为m3；L为每小时处理的所述中和海水的量，单位为m3；Q 为每小时鼓入空气的量，单位为Nm3，以标准状态，即0℃、1个大气压计算。Where R is the volume of the aeration vessel, the unit is m3; L is the amount of the neutralized seawater treated per hour, in units of m3; Q The amount of air per hour, in Nm3, calculated in the standard state, ie 0 ° C, 1 atmosphere.
  2. 如权利要求1所述的酸性海水处理方法，其中，R =（0.05～0.2）L。The acidic seawater treatment method according to claim 1, wherein R = (0.05 to 0.2) L.
  3. 如权利要求1所述的酸性海水处理方法，其中，所述酸性海水为吸收了SO2的海水。The acidic seawater treatment method according to claim 1, wherein the acidic seawater is seawater that absorbs SO2.
  4. 如权利要求1所述的酸性海水处理方法，其中，所述酸性海水为洗涤了内燃机尾气的海水。The acidic seawater treatment method according to claim 1, wherein the acidic seawater is seawater which washes off the exhaust gas of the internal combustion engine.
  5. 如权利要求4所述的酸性海水处理方法，其中，所述内燃机为船舶内燃机。The acidic seawater treatment method according to claim 4, wherein the internal combustion engine is a marine internal combustion engine.
  6. 如权利要求1所述的酸性海水处理方法，其中，所述碱性海水为pH值大于7的海水。The acidic seawater treatment method according to claim 1, wherein the alkaline seawater is seawater having a pH of more than 7.
  7. 如权利要求1所述的酸性海水处理方法，其中，所述碱性海水为取自海洋的天然新鲜海水。The acidic seawater treatment method according to claim 1, wherein the alkaline seawater is natural fresh seawater taken from the ocean.
  8. 如权利要求1所述的酸性海水处理方法，其中，所述中和海水的pH值为5.5～6.4。The acidic seawater treatment method according to claim 1, wherein the neutralized seawater has a pH of 5.5 to 6.4.
  9. 如权利要求1所述的酸性海水处理方法，其中，所述酸性海水与所述碱性海水在进入所述曝气容器前和/或进入所述曝气容器后进行混合。The acidic seawater treatment method according to claim 1, wherein the acidic seawater and the alkaline seawater are mixed before entering the aeration vessel and/or after entering the aeration vessel.
  10. 如权利要求1所述的酸性海水处理方法，其中，所述曝气容器与用于输送所述酸性海水的第一管道连通，所述碱性海水通过第二管道输送至所述第一管道，并在所述第一管道中与所述酸性海水混合。The acidic seawater treatment method according to claim 1, wherein the aeration vessel is in communication with a first conduit for conveying the acidic seawater, and the alkaline seawater is delivered to the first conduit through a second conduit, And mixing with the acidic seawater in the first conduit.
  11. 如权利要求1所述的酸性海水处理方法，其中，所述曝气容器分别与用于输送所述酸性海水的第一管道和用于输送所述碱性海水的第二管道连通，所述酸性海水与所述碱性海水在所述曝气容器中混合。The acidic seawater treatment method according to claim 1, wherein said aeration vessel is in communication with a first conduit for conveying said acidic seawater and a second conduit for transporting said alkaline seawater, said acid Seawater is mixed with the alkaline seawater in the aeration vessel.
  12. 如权利要求1所述的酸性海水处理方法，其中，所述中和海水从所述曝气容器排出后的pH值为6.5～7。The acidic seawater treatment method according to claim 1, wherein the neutralized seawater has a pH of 6.5 to 7 after being discharged from the aeration vessel.
  13. 种酸性海水处理设备，其特征在于，所述设备包括：An acidic seawater treatment device, characterized in that the device comprises:
    用于所述酸性海水与空气进行反应的曝气容器以及用于向所述曝气容器内曝气的曝气装置；An aeration vessel for reacting the acidic seawater with air and an aeration device for aerating the aeration vessel;
    所述曝气容器的容积按下式（I）配置：The volume of the aeration container is configured as shown in the following formula (I):
    R =（0.008～0.3）L …（I）；R = (0.008 ~ 0.3) L ... (I);
    式中R为所述曝气容器的容积，单位为m3；L为每小时需要处理海水的量，单位为m3。Where R is the volume of the aeration vessel, the unit is m3; L is the amount of seawater to be treated per hour, in units of m3.
  14. 如权利要求13所述的酸性海水处理设备，其中，R =（0.05～0.2）L。The acidic seawater processing apparatus according to claim 13, wherein R = (0.05 to 0.2) L.
  15. 权利要求13所述的酸性海水处理设备，其中，所述曝气装置被配置成具有曝气量Q，Q按下式（Ⅱ）计算：The acidic seawater processing apparatus according to claim 13, wherein said aeration device is configured to have an aeration amount Q, which is calculated by the following formula (II):
    Q =（25～85）L / R …（Ⅱ）Q = (25 ~ 85) L / R ... (II)
    式中Q 为每小时需要鼓入空气的量，单位为Nm3，以标准状态，即0℃、1个大气压计算。Where Q is the amount of air that needs to be bubbled per hour, in Nm3, calculated in the standard state, ie 0 ° C, 1 atmosphere.
  16. 权利要求13所述的酸性海水处理设备，其中，所述曝气容器与用于输送所述酸性海水的第一管道连通，所述第一管道与用于输送碱性海水的第二管道连通。The acidic seawater treatment apparatus according to claim 13, wherein the aeration vessel is in communication with a first conduit for transporting the acidic seawater, and the first conduit is in communication with a second conduit for transporting alkaline seawater.
  17. 如权利要求13所述的酸性海水处理方法，其中，所述曝气容器分别与用于输送所述酸性海水的第一管道和用于输送碱性海水的第二管道连通。The acidic seawater treatment method according to claim 13, wherein the aeration vessel is in communication with a first conduit for conveying the acidic seawater and a second conduit for transporting alkaline seawater, respectively.
PCT/CN2012/077718 2011-07-01 2012-06-28 Method and apparatus for processing acidic sea water WO2013004143A1 (en)

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